CN108798605B - Intelligent control digital hydraulic pumping unit - Google Patents
Intelligent control digital hydraulic pumping unit Download PDFInfo
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- CN108798605B CN108798605B CN201810963645.3A CN201810963645A CN108798605B CN 108798605 B CN108798605 B CN 108798605B CN 201810963645 A CN201810963645 A CN 201810963645A CN 108798605 B CN108798605 B CN 108798605B
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- 238000005086 pumping Methods 0.000 title claims abstract description 52
- 230000002457 bidirectional effect Effects 0.000 claims description 10
- 230000008859 change Effects 0.000 claims description 3
- 238000011084 recovery Methods 0.000 claims description 3
- 230000000712 assembly Effects 0.000 claims description 2
- 238000000429 assembly Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 abstract description 5
- 230000001276 controlling effect Effects 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000000875 corresponding effect Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 22
- 230000005540 biological transmission Effects 0.000 description 6
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- 239000003245 coal Substances 0.000 description 5
- 230000009467 reduction Effects 0.000 description 5
- 230000009466 transformation Effects 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 4
- 238000000605 extraction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
- E21B43/126—Adaptations of down-hole pump systems powered by drives outside the borehole, e.g. by a rotary or oscillating drive
- E21B43/127—Adaptations of walking-beam pump systems
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses an intelligent control digital hydraulic pumping unit which comprises a base, a walking beam, a support, a polished rod, a first digital hydraulic cylinder, a second digital hydraulic cylinder, an intelligent control system and a telescopic rod, wherein the walking beam is hinged with the top of the support, the polished rod is connected to one end of the walking beam extending out of the support, the intelligent control system is used for controlling the first digital hydraulic cylinder and the second digital hydraulic cylinder, a cylinder barrel of the first digital hydraulic cylinder and a cylinder barrel of the second digital hydraulic cylinder are respectively connected with the base, and a telescopic rod of the first digital hydraulic cylinder and a telescopic rod of the second digital hydraulic cylinder are respectively connected with the walking beam so as to drive the walking beam to extend out of the other end of the support to move up and down. The invention uses two digital hydraulic cylinders as driving sources to drive the corresponding action of the walking beam, has low cost, can save energy and electricity, realize intelligent control and zero maintenance, can improve the existing pumping unit equipment, upgrade and update, and can be applied to brand new pumping units, thereby achieving the purpose of saving funds and energy.
Description
Technical Field
The invention belongs to the technical field of oil and gas field exploitation equipment, and particularly relates to an intelligent control digital hydraulic pumping unit.
Background
At present, a walking beam type hydraulic pumping unit used for oil field exploitation basically comprises a main machine, a hydraulic station and an electric control system, wherein a common high-speed asynchronous motor is generally adopted to drive a reduction gearbox after being subjected to belt transmission reduction, and then the reduction gearbox is further subjected to reduction to drive cranks on two sides to rotate, the cranks drive a connecting rod to reciprocate up and down, the connecting rod drives a walking beam and a horsehead to swing up and down, a polished rod is driven to move up and down, and the polished rod drives a downhole plunger pump to move up and down so as to extract underground petroleum. The existing beam pumping unit has the following defects due to the arrangement of the belt transmission link: firstly, the belt transmission has great transmission loss, and the efficiency of the general belt transmission is only about 87%. Secondly, the service life of the belt is short, the belt needs to be replaced regularly, the labor intensity is high, and the oil extraction operation rate is affected. The existing motors mostly adopt common Y-series motors, the motor is low in efficiency and small in starting torque, and in order to meet the large torque requirement when the beam pumping unit is started, the motors with larger specifications are often arranged, so that the efficiency characteristic of the system is further deteriorated, electric energy is wasted, and the oil extraction cost is increased. Fourth, the belt is easy to slip in rainy days, so that the transmission efficiency is further reduced. Fifthly, the pumping unit is complex in structure and large in occupied area.
Disclosure of Invention
Aiming at the technical problem of poor energy-saving effect of the traditional beam pumping unit in the prior art, the invention provides the intelligent control digital hydraulic pumping unit which is energy-saving and power-saving, intelligent in control and low in cost.
In order to solve the technical problems, the invention adopts the following technical scheme:
The utility model provides an intelligent control digital hydraulic pumping unit, includes base, walking beam, support and polished rod, the top of walking beam and support is articulated, the polished rod is connected in the one end that the walking beam stretched out the support, still includes first digital hydraulic cylinder, second digital hydraulic cylinder and is used for the intelligent control system of first digital hydraulic cylinder and second digital hydraulic cylinder, the cylinder of first digital hydraulic cylinder and the cylinder of second digital hydraulic cylinder are connected with the base respectively, the telescopic link of first digital hydraulic cylinder and the telescopic link of second digital hydraulic cylinder are connected with the walking beam respectively, in order to drive the other end up-and-down motion that the support was stretched out to the walking beam.
Preferably, the telescopic rod of the first digital hydraulic cylinder and the telescopic rod of the second digital hydraulic cylinder are connected with the walking beam through rotating assemblies respectively.
Preferably, the rotating assembly comprises a fixed seat, a first crank, a second crank, a first connecting rod, a second connecting rod and a top frame, wherein the fixed seat is arranged at one end of the base close to the bracket, two opposite sides of the fixed seat are respectively provided with a shaft rod so as to be respectively and rotatably connected with one end of the first crank and one end of the second crank, a telescopic rod of the first digital hydraulic cylinder is connected with the first crank through a first pin shaft, the other end of the first crank is connected with the lower end of the first connecting rod through a second pin shaft, the upper end of the first connecting rod is connected with the top frame, and the top frame is connected with the walking beam; the telescopic rod of the second digital hydraulic cylinder is connected with the second crank through a third pin shaft, and two ends of the second connecting rod are respectively connected with the third pin shaft and the top frame.
Preferably, the cylinder barrel of the first digital hydraulic cylinder is connected with the base through a first shaft seat, the cylinder barrel of the second digital hydraulic cylinder is connected with the base through a second shaft seat, the first shaft seat and the second shaft seat are distributed in a staggered manner relative to the base, and the first shaft seat is closer to the support than the second shaft seat.
Preferably, the top surfaces and the bottom surfaces of the first crank and the second crank are respectively provided with a T-shaped groove which is arranged along the length direction so as to be connected with the balance weight through the T-shaped block.
Preferably, the top surface and the bottom surface of the first crank and the second crank are respectively provided with anti-slip teeth.
Preferably, a plurality of through holes distributed along the length direction are respectively arranged on two side surfaces of one end, close to the bracket, of the first crank and the second crank so as to penetrate through the second pin shaft or the third pin shaft.
The intelligent control digital hydraulic pumping unit comprises a base seat, a walking beam, a polished rod, a first digital hydraulic cylinder, a second digital hydraulic cylinder and an intelligent control system for the first digital hydraulic cylinder and the second digital hydraulic cylinder, wherein a cylinder barrel of the first digital hydraulic cylinder is fixed on the base seat, a telescopic rod of the first digital hydraulic cylinder is connected with a cylinder barrel of the second digital hydraulic cylinder, and a telescopic rod of the second digital hydraulic cylinder is connected with a polished rod pull rope.
Preferably, guide rails are arranged on two sides of the first digital hydraulic cylinder and the second digital hydraulic cylinder so as to avoid the first digital hydraulic cylinder and the second digital hydraulic cylinder from swinging relative to the starting axis.
Preferably, positioning structures are arranged around the first digital hydraulic cylinder and the second digital hydraulic cylinder so as to avoid swinging of the first digital hydraulic cylinder and the second digital hydraulic cylinder relative to the starting axis.
Preferably, the intelligent control system comprises a servo control system or an intelligent hydraulic control system, and the intelligent hydraulic control system comprises
The hydraulic station comprises an oil tank, an oil filling valve, a bidirectional hydraulic distributor, a first long-acting energy accumulator and a second long-acting energy accumulator, wherein one side of the bidirectional hydraulic distributor is connected with the first long-acting energy accumulator through a pump energy recovery valve and is used for balancing pump energy; the other side of the bidirectional hydraulic distributor is connected with a motor and an oil tank, and automatic oil change is realized through the combination of an electromagnetic reversing valve and a hydraulic control one-way valve;
the intelligent electric control system comprises an electric control box and a display screen which are connected with the control unit.
Compared with the prior art, the invention has the following beneficial effects: according to the invention, the two digital hydraulic cylinders are controlled by the intelligent control system to serve as driving sources so as to drive the corresponding action of the walking beam, so that the cost is low, energy and electricity can be saved, intelligent control is realized, and zero maintenance is realized; the novel oil pumping unit can be used for improving the existing oil pumping unit equipment, upgrading and updating, and can be applied to a brand new oil pumping unit, so that the purposes of saving funds and energy are achieved.
Drawings
FIG. 1 is a diagram of an intelligent hydraulic control system for intelligently controlling a digital hydraulic pumping unit in the invention;
fig. 2 is a schematic perspective view of an intelligent control digital hydraulic pumping unit according to a first embodiment of the present invention;
Fig. 3 is a schematic diagram of a three-dimensional structure of an intelligent control digital hydraulic pumping unit for displaying a first digital hydraulic cylinder according to a second embodiment of the present invention;
Fig. 4 is a schematic diagram of a three-dimensional structure of an intelligent control digital hydraulic pumping unit for displaying a second digital hydraulic cylinder according to a second embodiment of the present invention;
Fig. 5 is a schematic top view of an intelligent control digital hydraulic pumping unit according to a second embodiment of the present invention;
FIG. 6 is an intelligent control digital hydraulic pumping unit according to a third embodiment of the present invention;
Fig. 7 is a top view showing a positioning structure of a digital hydraulic cylinder for intelligently controlling a digital hydraulic pumping unit according to a third embodiment of the present invention.
Detailed Description
So that those skilled in the art can better understand the technical scheme of the present invention, the present invention will be described in detail with reference to the accompanying drawings and the specific embodiments.
The improved oil pumping unit adopts a digital hydraulic cylinder which obtains patent rights, the digital hydraulic cylinder can accurately control speed and position by integrating a new theory and intelligent algorithm into a chip, and the intelligent control digital hydraulic oil pumping unit is formed by combining the improvement of a mechanical part in the invention.
In the technical transformation of the pumping unit, the design can be carried out according to specific conditions, the cost problem of equipment updating transformation is considered, the transformation can be carried out on the basis of the existing pumping unit equipment by arranging the structural form of the digital hydraulic cylinder, so that the purpose of lifting and transforming the existing pumping unit can be achieved, funds and energy sources can be saved more, and the method is particularly seen in the first embodiment and the second embodiment.
Example 1
As shown in fig. 2, the intelligent control digital hydraulic pumping unit comprises a base 11, a walking beam 12, a bracket 14, a polished rod (not shown in the figure), a first digital hydraulic cylinder 10 and a second digital hydraulic cylinder 13, wherein the walking beam 12 is hinged with the top of the bracket 14, so that two ends of the walking beam 12 can move upwards around the hinged position. The polished rod is connected to one end of the walking beam 12 extending out of the bracket 14, the cylinder barrel of the first digital hydraulic cylinder 10 and the cylinder barrel of the second digital hydraulic cylinder 13 are respectively connected with the base 11, and the telescopic rod of the first digital hydraulic cylinder 10 and the telescopic rod of the second digital hydraulic cylinder 13 are respectively connected with the walking beam 12 so as to drive the walking beam 12 to extend out of the other end of the bracket 13 to move up and down.
Example two
As shown in fig. 3 to 5, it is different from the first embodiment in that the telescopic rod of the first digital hydraulic cylinder 10 and the telescopic rod of the second digital hydraulic cylinder 13 are connected to the walking beam 12 by a rotating assembly, respectively.
Specifically, the rotating assembly includes a fixing base 15, a first crank 16, a second crank 17, a first connecting rod 18, a second connecting rod 19 and a top frame 20, the fixing base 15 is disposed at one end of the base 11 near the support 14, two opposite sides of the fixing base 15 are respectively provided with a shaft lever 21, so as to be respectively connected with one end of the first crank 16 and one end of the second crank 17 in a rotating manner, so that the first crank 16 and the second crank 17 can respectively rotate around the shaft lever 21. The cylinder barrel of the first digital hydraulic cylinder 10 is connected with the base 11 through a first shaft seat 22, the cylinder barrel of the second digital hydraulic cylinder 13 is connected with the base 11 through a second shaft seat 23, and the first shaft seat 22 and the second shaft seat 23 are horizontally arranged and are respectively connected with two opposite side surfaces of the base 11. The telescopic rod of the first digital hydraulic cylinder 10 is connected with a first crank 16 through a first pin shaft 24, one end of the first crank 16, which is close to the bracket 14, is connected with the lower end of a first connecting rod 18 through a second pin shaft 25, the upper end of the first connecting rod 18 is connected with a top frame 20, and the top frame 20 is connected with a walking beam 12; the telescopic rod of the second digital hydraulic cylinder 13 is connected with the second crank 17 through a third pin 26, and two ends of the second connecting rod 19 are respectively connected with the third pin 26 and the top frame 20.
The first shaft seat 22 and the second shaft seat 23 are distributed in a staggered manner relative to the base 11, and the first shaft seat 22 is closer to the bracket 14 than the second shaft seat 23, so that the first connecting rod 18 driven by the first digital hydraulic cylinder 10 and the second connecting rod 19 driven by the second digital hydraulic cylinder 13 cannot be propped against and blocked in the rotating process, and free rotation of the first connecting rod 18 and the second connecting rod 19 is realized.
T-shaped grooves 27 are formed in the top surface and the bottom surface of the first crank 16 and the second crank 17 along the length direction, so that the T-shaped grooves are connected with the balance weight 28 through T-shaped blocks (not shown in the figure), and the positions of the balance weight 28 can be adjusted according to requirements. The top and bottom surfaces of the first crank 16 and the second crank 17 are provided with anti-slip teeth 29 to prevent sliding of the weight 28.
The two side surfaces of the first crank 16 and the second crank 17, which are close to one end of the bracket 14, are respectively provided with a plurality of through holes 30 distributed along the length direction so as to respectively penetrate through the second pin shaft 25 and the third pin shaft 26, and the penetrating positions of the second pin shaft 25 and the third pin shaft 26 can be adjusted according to the needs.
For the purpose of upgrading an existing pumping unit, see the following examples.
Example III
As shown in fig. 6, the intelligent control digital hydraulic pumping unit is different from the first and second embodiments in that the cylinder barrel of the first digital hydraulic cylinder 10 is fixed on the base 11, the telescopic rod of the first digital hydraulic cylinder 10 is connected with the cylinder barrel of the second digital hydraulic cylinder 13, and the telescopic rod of the second digital hydraulic cylinder 13 is connected with the polish rod pull rope. In order to avoid the relative pivot of the first and second digital hydraulic cylinders 10, 13 from swinging, positioning structures 31 are provided around the first and second digital hydraulic cylinders 10, 13. The positioning structure 31 comprises a fixing plate 312 and guide rails 311, wherein a through hole is formed in the middle of the fixing plate 312 so as to penetrate through the cylinder barrel of the first digital hydraulic cylinder 10 or the second digital hydraulic cylinder 13, and the four guide rails 311 are uniformly distributed around the first digital hydraulic cylinder 10 or the second digital hydraulic cylinder 13 and are respectively fixed on the fixing plate 312 so as to clamp and position according to the outer diameter of the cylinder barrel of the first digital hydraulic cylinder 10 or the second digital hydraulic cylinder 13.
As shown in fig. 7, the intelligent control system comprises a servo control system or an intelligent hydraulic control system, the intelligent hydraulic control system comprises a hydraulic station and an intelligent electric control system, the hydraulic station comprises an oil tank 1, an oil filling valve 2, a bidirectional hydraulic distributor 3, a digital hydraulic cylinder 10, a first long-acting energy accumulator 4 and a second long-acting energy accumulator 5, one side of the bidirectional hydraulic distributor 3 is connected with the first long-acting energy accumulator 4 through a pump energy recovery valve 6, and the first long-acting energy accumulator 4 is used for balancing pump energy; the other side of the bidirectional hydraulic distributor 3 is connected with the motor 7 and the oil tank 1, and automatic oil change is realized through the combination of an electromagnetic reversing valve and a hydraulic control one-way valve. The intelligent electric control system comprises an electric control box 8 and a display screen 9 which are connected with the control system, the digital hydraulic cylinder 10 is connected with the second long-acting energy accumulator 5 through an oil way and a control valve, and the second long-acting energy accumulator 5 is used for providing descending energy of a polished rod.
The intelligent hydraulic control system in the embodiment adopts a programmable digital controller with the model of PPCO1 as a control unit.
In the oil extraction operation of the intelligent hydraulic control system, the digital hydraulic cylinder is powered by the hydraulic station, and the lifting pulley is pushed by the digital hydraulic cylinder to drive the polish rod to do reciprocating operation, so that the polish rod is driven to work. The gravitational potential energy of the downstroke is stored through the bidirectional hydraulic distributor and the energy accumulator and released during the upstroke, so that the energy consumption is reduced; the load force and stroke generated in the working process are measured by a sensor and transmitted to an electric cabinet of the intelligent electric control system; after the data is analyzed by the processor, the data is stored in a construction graphic mode.
The intelligent control digital hydraulic pumping unit has the following technical effects.
1. According to the embodiment I and the embodiment II of the invention, the motor with the power consumption of 2.8-4.5 kilowatts is used after transformation, and compared with the motor with the power consumption of 30 kilowatts before transformation, the power consumption per hour is saved by 25.5 degrees, the power consumption per day is saved by 612 degrees, and the power charge per day is saved by 446.76 yuan according to 0.73 per degree. The three brand new pumping units used as upgrading and updating modes also use a 4.5 kilowatt motor to achieve the same effect. Therefore, compared with the pumping unit in the prior art, the intelligent control digital hydraulic pumping unit has the advantages of energy saving and electricity saving, low manufacturing cost, consumption reduction and zero maintenance.
2. In general, one ton of coal can generate 2778 degrees of electricity, 350 g-370 g of coal is needed for generating electricity once, one ton of coal is consumed to generate 2.7 tons of carbon dioxide, 8.5 kg of sulfur dioxide, 7.4 kg of nitrogen oxides, 10000 cubic meters of waste gas and 200 kg of smoke dust, so that one ton of coal can be saved in less than 5 days after one pumping unit is modified. For example, if there are 2 ten thousand pumping units in Daqing oil field, 4000 tons of coal can be saved each day, 1 ten thousand tons of carbon dioxide can be reduced, 34 tons of sulfur dioxide, 29.6 tons of nitrogen oxides, 4000 ten thousand cubic meters of waste gas and 800 tons of smoke dust can be reduced.
3. In the existing pumping unit, the motor drives the speed reducer to stop the pumping rod when the pumping rod reaches the highest position, and the intelligent control digital hydraulic pumping unit can stop the pumping rod for 2-3 seconds when the pumping rod reaches the highest position through the double digital hydraulic cylinders, so that the oil extraction amount of the pumping rod is increased.
4. The telescopic distance of the existing sucker rod is 3, 4 or 5 meters, and the oil pumping unit can further increase the distance of the sucker rod to more than 9 meters so as to increase the oil production.
The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention, the scope of which is defined by the claims. Various modifications and equivalent arrangements of this invention will occur to those skilled in the art, and are intended to be within the spirit and scope of the invention.
Claims (5)
1. The intelligent control digital hydraulic pumping unit comprises a base, a walking beam, a support and a polished rod, wherein the walking beam is hinged to the top of the support, the polished rod is connected to one end of the walking beam extending out of the support, and the intelligent control digital hydraulic pumping unit is characterized by further comprising a first digital hydraulic cylinder, a second digital hydraulic cylinder and an intelligent control system for controlling the first digital hydraulic cylinder and the second digital hydraulic cylinder, a cylinder barrel of the first digital hydraulic cylinder and a cylinder barrel of the second digital hydraulic cylinder are respectively connected with the base, and a telescopic rod of the first digital hydraulic cylinder and a telescopic rod of the second digital hydraulic cylinder are respectively connected with the walking beam so as to drive the other end of the walking beam extending out of the support to move up and down;
The telescopic rods of the first digital hydraulic cylinder and the telescopic rods of the second digital hydraulic cylinder are respectively connected with the walking beam through rotating assemblies, each rotating assembly comprises a fixed seat, a first crank, a second crank, a first connecting rod, a second connecting rod and a top frame, the fixed seats are arranged at one ends of the bases close to the brackets, two opposite sides of the fixed seats are respectively provided with a shaft rod so as to be respectively and rotatably connected with one end of the first crank and one end of the second crank, the telescopic rods of the first digital hydraulic cylinder are connected with the first crank through first pin shafts, the other ends of the first crank are connected with the lower ends of the first connecting rods through second pin shafts, the upper ends of the first connecting rods are connected with the top frames, and the top frames are connected with the walking beam; the telescopic rod of the second digital hydraulic cylinder is connected with the second crank through a third pin shaft, and two ends of the second connecting rod are respectively connected with the third pin shaft and the top frame;
The cylinder barrel of the first digital hydraulic cylinder is connected with the base through a first shaft seat, the cylinder barrel of the second digital hydraulic cylinder is connected with the base through a second shaft seat, the first shaft seat and the second shaft seat are distributed in a staggered mode relative to the base, and the first shaft seat is closer to the support than the second shaft seat.
2. The intelligent control digital hydraulic pumping unit according to claim 1, wherein the top surfaces and the bottom surfaces of the first crank and the second crank are provided with T-shaped grooves along the length direction so as to be connected with the balance weight through T-shaped blocks.
3. The intelligent control digital hydraulic pumping unit according to claim 1, wherein the top and bottom surfaces of the first and second cranks are provided with anti-slip teeth.
4. The intelligent control digital hydraulic pumping unit according to claim 1, wherein a plurality of through holes distributed along the length direction are respectively arranged on two side surfaces of one end of the first crank and one end of the second crank, which are close to the bracket, so as to penetrate through the second pin shaft or the third pin shaft.
5. The intelligent control digital hydraulic pumping unit of any one of claims 1 to 4, wherein the intelligent control system comprises a servo control system or an intelligent hydraulic control system comprising:
The hydraulic station comprises an oil tank, an oil filling valve, a bidirectional hydraulic distributor, a first long-acting energy accumulator and a second long-acting energy accumulator, wherein one side of the bidirectional hydraulic distributor is connected with the first long-acting energy accumulator through a pump energy recovery valve and used for balancing pump energy, and the other side of the bidirectional hydraulic distributor is connected with a motor and the oil tank and realizes automatic oil change through the combination of an electromagnetic reversing valve and a hydraulic control one-way valve;
the intelligent electric control system comprises an electric control box and a display screen which are connected with the control unit.
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| CN201810963645.3A CN108798605B (en) | 2018-08-23 | 2018-08-23 | Intelligent control digital hydraulic pumping unit |
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| CN201810963645.3A CN108798605B (en) | 2018-08-23 | 2018-08-23 | Intelligent control digital hydraulic pumping unit |
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| CN108798605B true CN108798605B (en) | 2024-06-14 |
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| CN110863802B (en) * | 2019-12-26 | 2024-07-16 | 大庆慧龙石油机械有限公司 | Beam-pumping unit support arm structure and use method thereof |
| CN112780244B (en) * | 2021-01-14 | 2022-11-29 | 江阴亿达机械制造有限公司 | Oil drilling and production fracturing equipment hydraulic cylinder assembly precision component |
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| CN203420681U (en) * | 2013-07-30 | 2014-02-05 | 郑州宜源翔石油科技有限公司 | Digital full-working-condition and long-stroke hydraulic pumping unit |
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| CN108798605A (en) | 2018-11-13 |
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